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Finding the Fourth Proportional to 553,953.60, 830,930.40 and 342,907.20

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Solution

The fourth proportional to 553,953.60, 830,930.40 and 342,907.20 is: 514,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,953.60 : 830,930.40 = 342,907.20 : x
  2. Step 2: Convert to fraction form
    553,953.60/830,930.40 = 342,907.20/x
  3. Step 3: Cross multiply
    553,953.60x = 830,930.40 × 342,907.20
  4. Step 4: Simplify right side
    553,953.60x = 284,932,016,858.88
  5. Step 5: Solve for x
    x = 284,932,016,858.88/553,953.60
  6. Step 6: Final answer
    x = 514,360.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.